SmogRank / World / United States / Minnesota / 2025
Most polluted cities in Minnesota, United States, 2025
16 cities in Minnesota, United States ranked by their average PM2.5 over the 365 days; 16 above the WHO annual guideline (5.0 µg/m³). Worst: Mankato at 10.2 µg/m³, #882 of 2,624 cities in the world. Cleanest: Cloquet at 7.4. A city needs measurements on 70% of the days to be ranked.
Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.
- 1Virginia 4%
- 2Mankato 4%
- 3Brainerd 4%
- 4Duluth 4%
- 5Cloquet 3%
- 6Detroit Lakes 3%
- 7Saint Cloud 3%
- 8Saint Paul 3%
- 9Blaine 3%
- 10Rochester 3%
- 11Saint Michael 2%
- 12Burnsville 2%
- 13Minneapolis 2%
- 14Apple Valley 2%
- 15Shakopee 2%
- 16Marshall 2%
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
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SmogRank, most polluted cities in Minnesota, United States, PM2.5, 2025, smogrank.com/us/region/minnesota/history/2025 (accessed 6 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.